Sample Co-ordination Using Poisson Sampling with Permanent Random Numbers (Method)


The method described here allows for the selection of positively or negatively co-ordinated samples, that is to say samples with large or on the contrary small overlap with previous samples. Negative coordination is particularly useful in order to spread the response burden evenly on the population by avoiding that the same units get selected in different samples when this is not necessary. Positive coordination is desirable when one wants to update a panel sample, or to be able to compare accurately results of a new survey with those of a previous survey. The proposed method is suitable for unequal inclusion probability surveys and dynamic populations with births, deaths, mergers and splits of units.


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